Production of He-4 and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC
NUCLEAR PHYSICS A, vol.971, pp.1-20, 2018 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 971
- Publication Date: 2018
- Doi Number: 10.1016/j.nuclphysa.2017.12.004
- Journal Name: NUCLEAR PHYSICS A
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.1-20
- Keywords: Pb-Pb collisions, ALICE detector, LHC, Anti-nuclei, HEAVY-ION COLLISIONS, ENERGY PROTON-BOMBARDMENT, ROOT-S(NN)=2.76 TEV, HADRON YIELDS, PHASE-DIAGRAM, MATTER, COALESCENCE, DEUTERONS, NUCLEUS, MODEL
- Bursa Uludag University Affiliated: No
Abstract
Results on the production of He-4 and (4)<(He) over bar> nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar < 1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4<(He) over bar> = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)<(He) over bar>/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.